Multiple choice

A radionuclide is

  1. an atom with high energy
  2. an atom with low energy
  3. an atom with an unstable nucleus
  4. also called radioisotope

  1. 1, 2 and 3

  2. 2, 3 and 4

  3. 1, 3 and 4

  4. 1, 2, 3 and 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A radionuclide or a radioactive nuclide is an atom with an unstable nucleus characterised by excess energy available to be imparted either to a newly created radiation particle within the nucleus or via internal conversion. Radionuclides are often referred to by chemists and physicists as radioactive isotopes or radioisotopes.

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